Puzzle 14 Explanation: Short Variables

Try it yourself#

Try running the code below to see the result.

Explanation#

In Go, the short variable declaration (:=) isused in a multivalue context, where there is more than one variable on the left side.

If all variables on the left are new, you’re good:

If you have no new variables, you’ll get a compilation error:

When there’s a mix, like in this teaser, our code will be okay as long as the types match. In this case, we write the following:

In the above line, b is an existing variable, and the type of 3, which is int, matches the current type of b. Here, c is a new variable, making this statement OK.